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/* Translate Mach exception codes into signal numbers. MIPS version.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <hurd.h>
#include <hurd/signal.h>
#include <mach/exception.h>
/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
into a signal number and signal subcode. */
void
_hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
{
detail->error = 0;
switch (detail->exc)
{
default:
*signo = SIGIOT;
detail->code = detail->exc;
break;
case EXC_BAD_ACCESS:
if (detail->exc_code == KERN_PROTECTION_FAILURE)
*signo = SIGSEGV;
else
*signo = SIGBUS;
detail->code = detail->exc_subcode;
detail->error = detail->exc_code;
break;
case EXC_BAD_INSTRUCTION:
*signo = SIGILL;
if (detail->exc_code == EXC_MIPS_II)
detail->code = detail->exc_subcode;
else
detail->code = 0;
break;
case EXC_ARITHMETIC:
switch (detail->exc_code)
{
case EXC_MIPS_OV: /* integer overflow */
*signo = SIGFPE;
detail->code = detail->exc_subcode;
break;
default:
*signo = SIGFPE;
detail->code = 0;
break;
case EXC_MIPS_INT:
/* Subcode is the fp_status word saved by the hardware.
Give an error code corresponding to the first bit set. */
if (detail->exc_subcode == EXC_MIPS_FLT_UNIMP)
*signo = SIGILL;
else
*signo = SIGFPE;
detail->code = detail->exc_subcode;
break;
}
break;
case EXC_EMULATION:
/* 3.0 doesn't give this one, why, I don't know. */
*signo = SIGEMT;
detail->code = 0;
break;
case EXC_SOFTWARE:
*signo = SIGEMT;
detail->code = 0;
break;
case EXC_BREAKPOINT:
*signo = SIGTRAP;
detail->code = 0;
break;
}
}
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